3 Cash - Tianqi Tongbao

The Tianwan Kingdom was a short-lived rebel state proclaimed by Xu Shouhui during the Red Turban uprisings that fractured Yuan dynasty authority across central China. Xu's regime, based in Hubei, lasted only until 1360 when he was murdered by his own general, Chen Youliang, who then founded the Han Kingdom in its place. That two-year window makes authenticated Tianwan coinage genuinely scarce by any measure.

The three-cash denomination is notably heavier than the single-cash issues of the same series, consistent with a deliberate weight standard rather than simple scaling.